EP0645124A1 - Seringue de dosage de substances visqueuses, en particulier de substances dentaires - Google Patents

Seringue de dosage de substances visqueuses, en particulier de substances dentaires Download PDF

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Publication number
EP0645124A1
EP0645124A1 EP94113615A EP94113615A EP0645124A1 EP 0645124 A1 EP0645124 A1 EP 0645124A1 EP 94113615 A EP94113615 A EP 94113615A EP 94113615 A EP94113615 A EP 94113615A EP 0645124 A1 EP0645124 A1 EP 0645124A1
Authority
EP
European Patent Office
Prior art keywords
threaded rod
cartridge
syringe according
bearing parts
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94113615A
Other languages
German (de)
English (en)
Other versions
EP0645124B1 (fr
Inventor
Rudolf Eykmann
Dr. Joachim Fritze
Birgit Uhrig
Dr. Dieter Schödel
Holger Burckhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kulzer GmbH
Original Assignee
Heraeus Kulzer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heraeus Kulzer GmbH filed Critical Heraeus Kulzer GmbH
Publication of EP0645124A1 publication Critical patent/EP0645124A1/fr
Application granted granted Critical
Publication of EP0645124B1 publication Critical patent/EP0645124B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/62—Applicators, e.g. syringes or guns

Definitions

  • the present invention relates to a syringe for the metered dispensing of viscous materials, in particular dental materials, with a cartridge receiving the material, into which a rotary piston is immersed from one end, the rotary piston being at least partially designed as a threaded rod and at its immersion end against presses a stopper and its threaded rod is slidably held in a bearing.
  • Such a syringe is known, for example, from the product information from Heraeus Kulzer GmbH "Charisma inlays - profit through perfection and aesthetics" (31292 / D 125 sK dt./WPR 12 12 200).
  • These syringes in which viscous dental materials sold under the product name "Charisma” (Charisma is a registered trademark of Heraeus Kulzer GmbH) are filled, have a cartridge into which the dental material is filled. This cartridge is tapered at its discharge end in the outer circumference, on which a cap is placed.
  • a rotary piston dips into the end of the cartridge opposite the discharge end, which at its end lies in a sleeve-shaped stopper, which in turn rests against the viscous material filled in the cartridge.
  • the rotary lobe is provided with a thread that is guided in a bearing in the form of a nut.
  • This nut is designed as an approximately rectangular plate with a central threaded bore, this nut being inserted into a slot at the immersion end of the cartridge, so that it is secured against rotation relative to the cartridge relative to the rotary piston screwed into the threaded bore.
  • the sealing cap of the cartridge is removed and the rotary piston, which has a grip part at its end, is screwed into the cartridge so that the stopper is displaced towards the discharge end of the cartridge.
  • the rotary lobe is turned back out of the cartridge in the opposite direction of rotation.
  • each of the aforementioned syringes and each syringe system has specific features and properties.
  • US Pat. No. 3,581,399 specifies a syringe with interchangeable tips or nozzles which, for example, are curved in the form of a thin channel in order to bring the dental material specifically to a location on a tooth that is to be processed.
  • DE-A1 42 00 044 discloses a dental cartridge for dispensing multi-component material for tooth fillings, which is inserted into a so-called lever syringe.
  • This lever syringe has a pistol-like adapter into which the cartridge with the dental material is inserted.
  • DE-GM 78 37 177 specifies a syringe for the direct application of dental filling material, the container receiving the filling material being designed as a foldable capsule which is inserted into the cartridge.
  • U.S. Patent 3,900,954 discloses a syringe that is similar to the syringe of U.S. Patent 3,581,399; a piston is frictionally inserted into a cartridge and has a protruding tip which presses into a sleeve-shaped part in which the dental material is located. The small, sleeve-shaped part is attached to the end of the cartridge and at the same time forms the discharge tip or nozzle for the material.
  • the present invention has for its object to provide a syringe for the metered delivery of viscous materials, in particular dental materials, which both the discharge of the viscous material from the syringe, and the manufacturer's assembly or filling the syringe is easier.
  • the bearing is divided into bearing parts at least once in the axial direction of the threaded rod, the bearing parts being spaced apart from one another and at a distance from the threaded rod by at least one expanding part in the radial direction of the threaded rod are held and the bearing parts have on their surfaces facing the threaded rod areas which can be brought into engagement with the threaded rod against the resistance of the bearing parts by external pressure.
  • the two bearing parts which engage the threaded rod on the outside it is possible to screw the threaded rod against the stopper or the viscous material and to push the material out of the end of the cartridge. If large quantities of the material stored in the cartridge are to be discharged, the piston or threaded rod is pressed into the cartridge without the syringe on the bearing parts being gripped by the user. Here, the bearing parts are held in their rest position, that is, out of engagement with the threaded rod, so that the threaded rod can move freely in the axial direction of the cartridge.
  • this bearing the bearing parts of which are held at a distance from one another by at least one expansion part in the radial direction to the threaded rod and thus outside the engagement with the thread of the threaded rod, has the advantage that in one application
  • highly viscous or pasty materials by compressing the bearing parts the threaded rod is engaged and pressure is exerted on the material with a rotary movement of the rotary piston, so that high forces can be applied with a slight rotary movement.
  • the bearing parts of the split bearing are relieved, the bearing parts open and the threaded rod or thread is released immediately. In order to completely remove the pressure from the stopper or from the material in the cartridge, the threaded rod can then be freely pulled out of the bearing or the cartridge.
  • These expansion parts or webs can engage, for example, in corresponding grooves which are formed in the syringe body or in the cartridge.
  • the spreading part or the spreading parts are formed on at least one of two opposite surfaces of two opposite bearing parts; such expansion parts or webs, which are connected to a bearing part, then press, appropriately biased, against a surface of the opposite bearing part, so that these two bearing parts over the Bridges are kept at a distance from each other.
  • the spreading part or parts of one bearing part are firmly connected to the opposite surfaces of the other bearing part, so that they keep the two bearing parts at a distance.
  • the syringe is preferably provided with two bearing parts which are formed on radially opposite sides of the threaded rod. In a simple, constructive construction of the expansion parts or the webs, these are arranged on the end faces of the bearing parts, that is to say on the sides which are aligned in the direction of the axis of the rotary piston.
  • These can be short, peg-shaped extensions which are arranged obliquely in the direction of pressure of the bearing parts towards the threaded rod and which preferably engage in corresponding grooves, which are assigned to the cartridge in a stationary manner, in such a way that they resiliently in held the grooves, can move to give in to the pressure by the user on the bearing parts.
  • the bearing parts should have a certain extent in the axial direction of the rotary piston or the threaded rod in order to form a sufficient grip area so that the user can grip these bearing parts or grip surfaces, the division of the is for a uniform storage of each bearing part Spreading parts in the axial direction are useful in two groups on each bearing part, which are arranged at a distance from one another in the axial direction and which consequently support each bearing part resiliently on the upper region and on the lower region.
  • the bearing parts are guided in guides in the radial direction relative to the threaded rod.
  • Such guides can be designed, for example, in the form of groove guides in which guide parts engage, both the grooves and the guide parts being able to be assigned to the bearing parts.
  • the bearing parts of the bearing are assigned to an adapter part in which the cartridge and the rotary piston can be inserted such that the threaded rod is passed between the bearing parts.
  • the adapter part forms a unit together with the bearing parts, into which different cartridges can optionally be installed.
  • the rotary piston can either be assigned to the cartridge to be used or the adapter part, or the rotary piston forms a separate component which can be inserted individually into a cartridge inserted therein via the adapter part in such a way that the end of the rotary piston contacts the stopper in the cartridge .
  • a simple construction of the adapter part is given in that the adapter part is closed by an end ring cap at the end of the cartridge into which the rotary piston is immersed.
  • This ring cap can be removed during assembly of the adapter part, so that the bearing parts can be inserted into the housing of the adapter part from the end face. Then the End ring ring pushed on.
  • such a ring cap can serve to connect an adapter housing composed of two halves.
  • Such a configuration of the adapter part or the housing of the adapter part from two half-shells is to be regarded as preferred, in particular also when the two half-shells are identical parts.
  • the bearing parts, the threaded rod and the parts of the adapter part should preferably be made of polyoxymethylene (POM).
  • POM polyoxymethylene
  • the cartridge is preferably made of polypropylene.
  • polypropylene is relatively soft, so that the cartridge can easily be inserted into the adapter part if it fits snugly.
  • such a plug which has a membrane surface against which the end of the rotary piston rests, is inserted into the cartridge as the inner plug.
  • This membrane surface is biased in the unloaded state against the direction of advance of the rotary piston, in which the material is discharged from the cartridge. If material is now discharged from the cartridge, the rotary piston is turned back and the pressure is removed from the stopper or the membrane surface. The membrane surface then tends to return to its prestressed position, creating a vacuum in the area of the material and removing the material from the exit nozzle so that no material leaks from the exit nozzle.
  • the bearing parts are released after a discharge of the material so that they come out of the inlet with the thread of the threaded rod under the force of the expansion parts and immediately release the threaded rod. After such a release, the piston rod is pushed back through the membrane surface.
  • the adapter part becomes 1 gripped by the user with one hand in such a way that the two grip surfaces 8 of the bearing parts 7 are gripped between the thumb and index finger and the two bearing parts 7 can be pressed together against the radially outward tensioning force of the webs 11 until the respective one Thread sections 9 of the bearing parts 7 engage in the thread 10 of the threaded rod 4 '.
  • the rotary piston 4 is rotated on the handle 5 so that it can be slowly inserted into the cartridge 2; the plug 6 presses against the material, which then emerges in metered fashion from the discharge nozzle 23 of the cartridge 2.
  • the bearing parts 7 are released so that, due to the action of the webs 11, they are pressed radially outwards out of engagement with the threaded rod 4 '.
  • the material under pressure via the plug 6 in the cartridge 2 relaxes, so that further leakage of the material is prevented.
  • the threaded rod 4 ′ can be withdrawn from the cartridge 2, as a result of which a negative pressure is created in the cartridge, as a result of which this occurs in the outlet opening of the outlet nozzle 23 material is drawn into the cartridge 2.
  • the syringe can be stored until further use, the entire pressure which is applied when the material is discharged via the threaded rod 4 'being removed from the material.
  • the adapter part 1 is then available for receiving another cartridge, possibly with other material that is to be applied, by removing the used cartridge 2 from the adapter part 1.
  • Such an exchange of the cartridge 2 is particularly advantageous in the field of dental medicine and dental technology, since in the dental field the most diverse materials from patient to patient or from workpiece to workpiece, also with regard to the most varied Material colors can be used. It is then sufficient to provide a single adapter part 1 into which the different cartridges 2 are then inserted.
  • the rotary piston 4 can be moved by the user if he is not in the starting position of the adapter part 1 the threaded portions 9 of the bearing parts 7 are engaged, are advanced until the end of the rotary piston 4 comes into contact with the stopper 6. Then the two bearing parts 7 are pressed together via the grip surfaces 8 until the threaded sections 9 engage in the thread 10 of the threaded rod 4 '. Then, by rotating the rotary piston 4 on the handle 5, a further metered discharge of the dental material can take place without great effort.
  • the embodiment of the adapter part 1 according to FIGS. 3 and 4 differs from the embodiment according to FIGS. 1 and 2 in that the bearing parts have a square grip surface 8.
  • the bearing parts 7 are each held in their axial direction in the direction of the axis 13 of the threaded rod 4 'by webs 14 in the axial direction. These webs 14 rest on projections of the housing of the adapter part 1 and can each move axially in the direction of the double arrows 16 in FIG. 3 towards the threaded rod 4 'and away from the threaded rod 4'.
  • FIG. 3 shows the rest position of the bearing parts 7, in which their threaded sections 9 are not in engagement with the thread 10 of the threaded rod 4 '.
  • the bearing parts 7 are held in this position in this embodiment, for example, by the indicated spring elements 24, which are suitably opposed. But web-like expansion parts can also be used, which are preferably used. As can be seen, in this position the threaded rod 4 'can be freely pushed in the direction of the double arrow 16 into the adapter part 1 or pulled out of the adapter part 1, ie without being rotated about its axis 13.
  • the cartridge 2 is interchangeably locked in the adapter part 1 by means of a type of bayonet lock.
  • projections 17 are provided on the inner surfaces of the adapter part 1, specifically at the end facing away from the open side of the adapter part 1, which can be seen in FIGS. 3, 5 and 7 in the different designs of the tip. These projections 17, for example in the form of short web parts, engage corresponding web parts 25 (see FIG. 8) at the end of a cartridge 2 to be inserted, in that after the cartridge 2 has been inserted into the adapter part 1, the cartridge 2 and the adapter part 1 are rotated radially relative to one another .
  • the projections 17 are provided with an inclined surface or to align the projections at an angle to a plane that is perpendicular to the axis 13 of the threaded rod 4 ' , these sloping surfaces engaging behind the webs on the cartridge 2 (bayonet lock).
  • Such projections 17 with inclined surfaces 18 can be seen in Figures 3, 5 and 7.
  • the adapter part 1 is composed of two identical half-shells 19 which lie flat on one another in the area of the parting plane 20, in which the axis 13 of the threaded rod 4 'also extends.
  • the two half-shells 19 of the adapter part 1 are connected to one another by interlocking connecting parts 26 (see FIG. 3), and at the other end, the end of the threaded rod 4 ′ into the adapter part 1 they are held together by an end ring cap 21.
  • the connecting parts 26 can be knobs which snap into corresponding bores.
  • the ring cap 21 engages over parts of the two half-shells 19, as shown in FIGS. 6 and 8.
  • This ring cap 21 can be designed such that it remains there permanently after it is clamped onto the half-shells 19.
  • the passage opening 22 of the ring cap 21 for the rotary piston 4 is dimensioned so that it is only slightly larger than the outer diameter of the threaded rod 4 'and in this way forms a guide for the threaded rod 4', especially when the two bearing parts 7 are not with their Engage threaded section 9 in the thread 10 of the threaded rod 4 '.
  • the two bearing parts 7, which are also identical parts, are inserted into the half-shells 19 from the inside before the ring cap 21 is clamped when the adapter part 1 is assembled.
  • FIG. 8 shows a sectional view through the cartridge 2, which is inserted into the adapter part 1 of FIG. 7.
  • the stopper 6 is shown in two different positions, namely in a position shown on the right after filling a cartridge 2 with viscous dental material and in a position shown on the left, in which the stopper 6 is pushed forward by the rotary piston 4 ' is.
  • the stopper 6 is a cup-shaped stopper with side walls 27 and a bottom surface designed as a membrane surface 28.
  • the membrane surface 28 is arched or biased towards the end of the rotary piston 4 in the rest position of the plug 6.
EP94113615A 1993-09-23 1994-08-31 Seringue de dosage de substances visqueuses, en particulier de substances dentaires Expired - Lifetime EP0645124B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4332307 1993-09-23
DE4332307A DE4332307C1 (de) 1993-09-23 1993-09-23 Spritze zum dosierten Abgeben von viskosen Werkstoffen, insbesondere von dentalen Werkstoffen

Publications (2)

Publication Number Publication Date
EP0645124A1 true EP0645124A1 (fr) 1995-03-29
EP0645124B1 EP0645124B1 (fr) 1997-12-03

Family

ID=6498369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113615A Expired - Lifetime EP0645124B1 (fr) 1993-09-23 1994-08-31 Seringue de dosage de substances visqueuses, en particulier de substances dentaires

Country Status (6)

Country Link
US (1) US5647856A (fr)
EP (1) EP0645124B1 (fr)
JP (1) JP3106877B2 (fr)
AT (1) ATE160694T1 (fr)
CA (1) CA2132676C (fr)
DE (1) DE4332307C1 (fr)

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DE29600523U1 (de) * 1996-01-13 1996-03-21 Voco Gmbh Misch- und Applikationskapsel für Dentalmaterial
AU3203599A (en) * 1998-04-01 1999-10-18 Parallax Medical, Inc. Pressure applicator for hard tissue implant placement
USD419236S (en) * 1998-10-02 2000-01-18 3M Innovative Properties Company Syringe-type applicator
US6095814A (en) * 1999-01-29 2000-08-01 3M Innovative Properties Company Dispensing cartridge with stepped chamber
US6234996B1 (en) 1999-06-23 2001-05-22 Percusurge, Inc. Integrated inflation/deflation device and method
US6783515B1 (en) 1999-09-30 2004-08-31 Arthrocare Corporation High pressure delivery system
US6423050B1 (en) 2000-06-16 2002-07-23 Zbylut J. Twardowski Method and apparatus for locking of central-vein catheters
US6571992B2 (en) * 2001-01-12 2003-06-03 Dentsply Research & Development Corp. Dispensing syringe
EP2311408B1 (fr) 2003-03-14 2019-02-20 DePuy Spine, Inc. Dispositif hydraulique d'injecton de ciment osseux utilisé dans le domaine de la vertebroplastie percutanée
US8066713B2 (en) 2003-03-31 2011-11-29 Depuy Spine, Inc. Remotely-activated vertebroplasty injection device
US8415407B2 (en) 2004-03-21 2013-04-09 Depuy Spine, Inc. Methods, materials, and apparatus for treating bone and other tissue
WO2005030034A2 (fr) 2003-09-26 2005-04-07 Depuy Spine, Inc. Dispositif destine a administrer une matiere visqueuse
CA2575699C (fr) 2004-07-30 2014-07-08 Disc-O-Tech Medical Technologies Ltd. Procedes, materiaux et appareil de traitement des os et d'autres tissus
JP2006110919A (ja) * 2004-10-18 2006-04-27 Kitamura Seisakusho:Kk インク補給具
DE102004059126B4 (de) * 2004-12-08 2014-01-16 Roche Diagnostics Gmbh Adapter für Injektionsgerät
US9381024B2 (en) 2005-07-31 2016-07-05 DePuy Synthes Products, Inc. Marked tools
US9918767B2 (en) 2005-08-01 2018-03-20 DePuy Synthes Products, Inc. Temperature control system
US8360629B2 (en) 2005-11-22 2013-01-29 Depuy Spine, Inc. Mixing apparatus having central and planetary mixing elements
DE102007001432A1 (de) * 2006-08-14 2008-02-21 Tecpharma Licensing Ag Dosiermechaniksperrung
DE102006038101A1 (de) * 2006-08-14 2008-02-21 Tecpharma Licensing Ag Injektionsvorrichtung mit Klauensicherung
DE102006038123C5 (de) * 2006-08-14 2012-05-03 Tecpharma Licensing Ag Injektionsvorrichtung mit Mechanikverriegelung
DE102006038103B4 (de) * 2006-08-14 2017-02-23 Tecpharma Licensing Ag Injektionsvorrichtung mit variabler Gewindeführung
US9642932B2 (en) 2006-09-14 2017-05-09 DePuy Synthes Products, Inc. Bone cement and methods of use thereof
EP3095511A1 (fr) 2006-10-19 2016-11-23 Depuy Spine Inc. Récipient scellé
DE102006059801B4 (de) * 2006-12-15 2009-12-31 TALON Technische Geräte GmbH Injektor zum Einbringen von Harz in Schadstellen von Glasscheiben
DE102007034477A1 (de) 2007-07-20 2009-01-22 Voco Gmbh Spritze und Verfahren zum dosierten Abgeben von Werkstoffen
DE102011005919A1 (de) * 2011-03-22 2012-09-27 Voco Gmbh Drehspritze sowie Spritzenkörper und Mutterteil für eine Drehspritze
JP6182039B2 (ja) * 2013-09-30 2017-08-16 ぺんてる株式会社 バネ係合を利用したピストンを有する２成分混合容器

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EP0225439A1 (fr) * 1985-11-26 1987-06-16 Dentsply International, Inc. Seringue pour dosage multiple
DE4200044A1 (de) * 1991-01-07 1992-07-09 Centrix Inc Dosierende dentalpatrone

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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0225439A1 (fr) * 1985-11-26 1987-06-16 Dentsply International, Inc. Seringue pour dosage multiple
DE4200044A1 (de) * 1991-01-07 1992-07-09 Centrix Inc Dosierende dentalpatrone

Also Published As

Publication number Publication date
ATE160694T1 (de) 1997-12-15
CA2132676A1 (fr) 1995-03-24
JP3106877B2 (ja) 2000-11-06
JPH07204212A (ja) 1995-08-08
CA2132676C (fr) 2000-06-20
US5647856A (en) 1997-07-15
EP0645124B1 (fr) 1997-12-03
DE4332307C1 (de) 1994-09-29

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